Note: If you want to change the machine type/model, press Y when prompted. Type in the machine type/model and then press Enter.

6.Follow the instructions on the screen to complete the update.

Updating (flashing) BIOS from your operating system

Note: Because Lenovo makes constant improvements to the Web site, the Web page contents are subject to change without notice, including the contents referenced in the following procedure.

To update (flash) BIOS from your operating system:

1.Go to http://www.lenovo.com/support.

2.Do the following to locate the downloadable files for your machine type:

a.In the Enter a product number field, type your machine type and click Go.

b.Click Downloads and drivers.

c.Select BIOS in the Refine results field to easily locate all the BIOS related links.

d.Click the BIOS update link.

e.Click the TXT file that contains the instructions for updating (flashing) BIOS from your operating system.

3.Print these instructions. This is very important because they are not on the screen after the download begins.

4.Follow the printed instructions to download, extract, and install the update.

Recovering from a POST/BIOS update failure

If power to your computer is interrupted while POST/BIOS is being updated (flash update), your computer might not restart correctly. If this happens, perform the following procedure commonly called Boot-block Recovery.

1.Turn off the computer and any attached devices, such as printers, monitors, and external drives.

2.Unplug all power cords from electrical outlets, and remove the computer cover. Refer to “Removing the cover” in the ThinkStation Hardware Installation and Replacement Guide.

3.Access the system board. Refer to “Accessing system board components” in the ThinkStation Hardware Installation and Replacement Guide.

4.Locate the Clear CMOS/Recovery jumper on the system board. Refer to “Identifying parts on the system board” in the ThinkStation Hardware Installation and Replacement Guide.

5.Remove any cables that impede access to the Clear CMOS/Recovery jumper.

6.Move the jumper from the standard position (pin 1 and pin 2) to pin 2 and pin 3.

7.Reconnect any cables that were disconnected. Refer to “Completing the parts replacement” in the ThinkStation Hardware Installation and Replacement Guide.

8.Close the computer cover and reconnect the power cords for the computer and monitor to electrical outlets.

9.Turn on the computer and the monitor. Insert the POST/BIOS update (flash) disc into the optical drive.

10.Turn the computer off and back on again.

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Lenovo 4218, 4155, 4158 manual Updating flashing Bios from your operating system, Recovering from a POST/BIOS update failure
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4218, 4155, 4158 specifications

Lenovo has long been recognized for its innovative approach to laptop and desktop manufacturing, delivering a combination of performance, reliability, and value. The Lenovo 4158, 4155, and 4218 models are a testament to this commitment. Targeting a variety of users, these devices cater to both business and personal needs, ensuring that users have the tools they require for productivity and entertainment.

The Lenovo 4158 series is particularly noteworthy for its lightweight design combined with robust performance. This model is equipped with the latest Intel processors, which provide quick responsiveness and efficient multitasking capabilities. Users can choose between various storage options, including solid-state drives (SSDs) for faster data access and traditional hard disk drives (HDDs) for larger storage capacities. The display is another highlight of the 4158, featuring an anti-glare screen that enhances usability in bright environments.

Similarly, the Lenovo 4155 boasts impressive specifications aimed at budget-conscious consumers without compromising performance. This series is powered by AMD processors that deliver good processing power for everyday tasks. The graphics performance is also commendable, allowing for smooth video playback and casual gaming. Lenovo has incorporated a combination of USB ports and HDMI connections in the design, making it versatile for various peripheral devices.

The Lenovo 4218 model stands out with its advanced security features. It includes a fingerprint reader and TPM (Trusted Platform Module) chip, ensuring that user data remains secure. This model is built for professionals who prioritize data protection alongside performance. The 4218 is equipped with a full HD display, providing vibrant colors and clarity for presentations and media consumption. Additionally, its battery life extends beyond typical usage, enabling uninterrupted productivity throughout the day.

Each of these Lenovo models supports a wide range of connectivity options, including Wi-Fi 6 for faster internet speeds and a Bluetooth option that enhances connectivity with various devices. The ergonomic keyboards across all models are designed for comfort, reducing fatigue during extended use.

In summary, the Lenovo 4158, 4155, and 4218 series exemplify Lenovo's dedication to delivering high-quality technology catering to diverse user needs. With their compelling features and robust build quality, these models are well-suited for students, professionals, and casual users alike. Whether it's for creative tasks, business utilization, or general computing, users can rely on Lenovo to provide the tools necessary for success.
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